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Finding the Fourth Proportional to 489.90, 734.44 and 335.44

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Solution

The fourth proportional to 489.90, 734.44 and 335.44 is: 502.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.90 : 734.44 = 335.44 : x
  2. Step 2: Convert to fraction form
    489.90/734.44 = 335.44/x
  3. Step 3: Cross multiply
    489.90x = 734.44 × 335.44
  4. Step 4: Simplify right side
    489.90x = 246,360.55
  5. Step 5: Solve for x
    x = 246,360.55/489.90
  6. Step 6: Final answer
    x = 502.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.